I can see where the peak could be categorized as aggressive.
After spending much time with it (i own two in fact) it is hard to listen to music any other way.
With an average source, i am sure the peak can come across as, um, harsh.
However, after hearing many dacs (and transports) feeding the peak, it is now quite evident to me that the source is being heard. And is really just as important as the amp or headphone, probably more. (but is somewhat less discussed on head-fi.)
We discuss amps as though they are in absence of source.
But i understand that this dialogue is difficult to achieve...
I only feel like i know the peak because i have heard it with so many sources.
From the w4s dac-2, musical fidelity m1, bryston bda-1, mhdt havana, human audio muto, jkdac32, stagedac, violectric v800, and others.
The peak has faithfully revealed the essence of my sources more than any other amp i have owned.
I liked the sound lots with some of those dacs, loved it with some, nearly hated it with others.
My mistake early in this hobby was assuming bad sound is the cans first, the amp second, source third....
My 3-plus years on this forum didn't really teach me how wrong i was. I had to hear it for myself.
However, i am disheartened frequently by the youngsters here... I want to reach out to them and tell them " don't buy those hd800 til you have a decent rig.".
But why spoil the fun of the journey for them.....
I have owned the liquid fire, still own a darkstar, and have owned other many amps...
The peak has its place. It is fast, dynamic, ruthless... Yet can be tailored to some degree to sound a wee bit more like tubes. Hahaha
People wondered why i ditched the LF in favor of the Peak. And my short answer is that the Peak was more transparent.
The LF has oomph, but the Peak with a Sylvania bad boy, or shugauang treasure, was able to deliver a more holographic listening experience. For me, with my gear Even with a headphone as stubbornly narrow-staged as the LCD-3.
I am sure other amp owners have found that something that appeals to them in their rigs. And that is what it is all about.
Finding your happy place...
Mine is the Peak.
Just sharing....
Cheers,
The wussy one.